Process for treating leather for the manufacture of cue-tips and the article produced thereby.



UNITED STATES PATENT OFFICE.

WELCOME C. MARTIN, OF CHICAGO, ILLINOIS.

PROCESS FOR TREATING LEATHER FOR THE MANUFACTURE OF CUE-TIPS AND THE ARTICLE PRODUCED THEREBY.

No Drawing.

Specification of Letters Patent.

To all whom, it may concern Be it known that I, WVELOOME C. MARTIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Process for Treating Leather for the Manufacture of Cue-Tips and the Article Produced Thereby, of which the following is a specification.

This invention relates to the manufacture of cue tips, and its object is to render ordinary tanned leather into a suitable condition for this purpose, thereby making it possible to use low priced remnants instead of having leather tanned especially for tips as has heretofore been done.

Leather as commonly tanned does not have suflicient elasticity, and is also inclined to pack and glaze so that it will not hold chalk, when used for this purpose. I overcome these troubles by extracting the grease and oils from the leather and then soaking it in a solution of oxalic acid, which, on drying leaves a crystalline deposit in the interstices or pores of the leather which acts to keep it from packing. The deposit of the solid matter in the leather stifl'ens the fibers, thereby making the leather more elastic, and it also acts to hold the fibers of the leather apart and greatly increases its chalk-holding properties. I use an oxalic acid solution on account of the readiness with which it is deposited in the pores of the leather in a crystalline state, and its adaptability for stiffening and holding the fibers of the leather apart.

- For harness leather or leather of a similar nature a saturated solution of oxalic acid may be used, but for the harder leathers the strength of the solution must be gaged t0 the particular kind of leather used, since the harder leathers will not absorb a saturated solution as readily as they will a Weaker solution, the strength of which, to give the best results, must be determined by actual test with the grade of leather. The leather.

WELCOME C. MARTIN.

Witnesses:

WILL M. HILLS, LEONARD A. SNYDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Patented Feb. 18, 1913.

Application filed November 7, 1906. Serial No. 342,437. 

